/**
 * Plexa Chat Styles
 *
 * Styles for both basic container and desktop layouts.
 * Works on frontend and admin contexts.
 */

/* ==========================================================================
   BASE VARIABLES
   ========================================================================== */

:root {
    --plexa-chat-bg: #1a1a1a;
    --plexa-chat-bg-secondary: #222;
    --plexa-chat-bg-tertiary: #2a2a2a;
    --plexa-chat-border: #333;
    --plexa-chat-border-light: #444;
    --plexa-chat-text: #fff;
    --plexa-chat-text-muted: #888;
    --plexa-chat-text-secondary: #ccc;
    --plexa-chat-primary: #4a90d9;
    --plexa-chat-primary-hover: #3a7bc8;
    --plexa-chat-error: #ff6b6b;
    --plexa-chat-error-bg: #4a2020;
    --plexa-chat-success: #4caf50;
    --plexa-chat-radius: 8px;
    --plexa-chat-radius-lg: 16px;
}

/* ==========================================================================
   BASIC CONTAINER
   ========================================================================== */

.plexa-chat-container {
    display: flex;
    flex-direction: column;
    height: 500px;
    background: var(--plexa-chat-bg);
    border-radius: var(--plexa-chat-radius);
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 14px;
}

.plexa-chat--frontend .plexa-chat-container {
    border: 1px solid var(--plexa-chat-border);
}

/* Messages area */
.plexa-chat-messages {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Input area */
.plexa-chat-input {
    flex: 0 0 auto;
    display: flex;
    gap: 8px;
    padding: 12px;
    border-top: 1px solid var(--plexa-chat-border);
    background: var(--plexa-chat-bg-secondary);
}

.plexa-chat-input__field {
    flex: 1 1 auto;
    padding: 10px 14px;
    border: 1px solid var(--plexa-chat-border-light);
    border-radius: 20px;
    font-size: 14px;
    line-height: 1.4;
    resize: none;
    max-height: 120px;
    outline: none;
    background: var(--plexa-chat-bg-tertiary);
    color: var(--plexa-chat-text);
    transition: border-color 0.2s;
}

.plexa-chat-input__field::placeholder {
    color: var(--plexa-chat-text-muted);
}

.plexa-chat-input__field:focus {
    border-color: var(--plexa-chat-primary);
}

.plexa-chat-input__send {
    flex: 0 0 40px;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: var(--plexa-chat-primary);
    color: var(--plexa-chat-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.plexa-chat-input__send:hover {
    background: var(--plexa-chat-primary-hover);
}

.plexa-chat-input__send:disabled {
    background: #555;
    cursor: not-allowed;
}

.plexa-chat-input__send .dashicons {
    font-size: 20px;
    width: 20px;
    height: 20px;
}

/* ==========================================================================
   MESSAGES
   ========================================================================== */

.plexa-chat-message {
    max-width: 85%;
    animation: plexa-chat-fadein 0.2s ease;
}

@keyframes plexa-chat-fadein {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.plexa-chat-message--user {
    align-self: flex-end;
}

.plexa-chat-message--assistant {
    align-self: flex-start;
}

.plexa-chat-message--system {
    align-self: center;
    text-align: center;
}

.plexa-chat-message__content {
    padding: 10px 14px;
    border-radius: var(--plexa-chat-radius-lg);
    line-height: 1.5;
    word-wrap: break-word;
}

.plexa-chat-message--user .plexa-chat-message__content {
    background: var(--plexa-chat-primary);
    color: var(--plexa-chat-text);
    border-bottom-right-radius: 4px;
}

.plexa-chat-message--assistant .plexa-chat-message__content {
    background: transparent;
    color: var(--plexa-chat-text);
    padding-left: 0;
    font-size: 16px;
}

.plexa-chat-message--system .plexa-chat-message__content {
    background: var(--plexa-chat-bg-tertiary);
    color: var(--plexa-chat-text-secondary);
    font-size: 12px;
}

/* ==========================================================================
   TYPING INDICATOR
   ========================================================================== */

.plexa-chat-typing {
    display: flex;
    gap: 4px;
    padding: 10px 0;
    align-self: flex-start;
}

.plexa-chat-typing span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--plexa-chat-text-muted);
    animation: plexa-chat-bounce 1.4s infinite ease-in-out both;
}

.plexa-chat-typing span:nth-child(1) { animation-delay: -0.32s; }
.plexa-chat-typing span:nth-child(2) { animation-delay: -0.16s; }

@keyframes plexa-chat-bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

/* ==========================================================================
   STATUS CARD (replaces typing indicator for app layout)
   ========================================================================== */

.plexa-chat-status-card {
    align-self: flex-start;
    width: 100%;
    max-width: 85%;
    border: 1px solid var(--plexa-chat-border);
    border-radius: var(--plexa-chat-radius);
    background: var(--plexa-chat-bg-secondary);
    overflow: hidden;
    animation: plexa-chat-fadein 0.2s ease;
    font-size: 13px;
}

.plexa-chat-status-card__header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    color: var(--plexa-chat-text-secondary);
    line-height: 1.4;
    user-select: none;
}

.plexa-chat-status-card__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--plexa-chat-primary);
    flex-shrink: 0;
}

.plexa-chat-status-card--active .plexa-chat-status-card__dot {
    animation: plexa-status-pulse 1.5s ease-in-out infinite;
}

@keyframes plexa-status-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.plexa-chat-status-card__agent {
    font-weight: 500;
    color: var(--plexa-chat-text);
}

.plexa-chat-status-card__label {
    color: var(--plexa-chat-text-muted);
}

.plexa-chat-status-card__timer {
    margin-left: auto;
    font-variant-numeric: tabular-nums;
    color: var(--plexa-chat-text-muted);
    font-size: 12px;
}

.plexa-chat-status-card__chevron {
    flex-shrink: 0;
    font-size: 11px;
    color: var(--plexa-chat-text-muted);
    transition: transform 0.15s ease;
}

/* Tool list */
.plexa-chat-status-card__tools {
    padding: 0 14px 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.plexa-chat-status-card__tool {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 2px 0 2px 16px;
    font-size: 12px;
    color: var(--plexa-chat-text-muted);
}

.plexa-chat-status-card__tool-icon {
    width: 14px;
    text-align: center;
    flex-shrink: 0;
}

.plexa-chat-status-card__tool--active .plexa-chat-status-card__tool-icon {
    color: var(--plexa-chat-primary);
}

.plexa-chat-status-card__tool--done .plexa-chat-status-card__tool-icon {
    color: var(--plexa-chat-success);
}

.plexa-chat-status-card__tool-name {
    flex: 1;
}

.plexa-chat-status-card__tool-time {
    margin-left: auto;
    font-variant-numeric: tabular-nums;
}

/* Shimmer bar */
.plexa-chat-status-card__shimmer {
    height: 3px;
    background: var(--plexa-chat-bg-tertiary);
    overflow: hidden;
}

.plexa-chat-status-card__shimmer-bar {
    height: 100%;
    width: 40%;
    background: linear-gradient(90deg, transparent, var(--plexa-chat-primary), transparent);
    animation: plexa-shimmer 1.5s ease-in-out infinite;
}

@keyframes plexa-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(350%); }
}

/* Collapsed state */
.plexa-chat-status-card--collapsed {
    border-color: transparent;
    background: transparent;
}

.plexa-chat-status-card--collapsed .plexa-chat-status-card__header {
    padding: 6px 0;
    font-size: 12px;
    color: var(--plexa-chat-text-muted);
}

.plexa-chat-status-card--collapsed .plexa-chat-status-card__dot {
    width: 6px;
    height: 6px;
    background: var(--plexa-chat-success);
}

/* Error collapsed */
.plexa-chat-status-card--error .plexa-chat-status-card__dot {
    background: var(--plexa-chat-error);
}

.plexa-chat-status-card--error .plexa-chat-status-card__header {
    color: var(--plexa-chat-text-muted);
    opacity: 0.7;
}

/* Expandable */
.plexa-chat-status-card--expandable .plexa-chat-status-card__header:hover {
    color: var(--plexa-chat-text-secondary);
}

.plexa-chat-status-card--expandable.plexa-chat-status-card--expanded {
    border-color: var(--plexa-chat-border);
    background: var(--plexa-chat-bg-secondary);
}

.plexa-chat-status-card--expandable.plexa-chat-status-card--expanded .plexa-chat-status-card__header {
    padding: 8px 14px;
}

/* ==========================================================================
   ERROR
   ========================================================================== */

.plexa-chat-error {
    padding: 10px 14px;
    background: var(--plexa-chat-error-bg);
    color: var(--plexa-chat-error);
    border-radius: var(--plexa-chat-radius);
    font-size: 13px;
    animation: plexa-chat-fadein 0.2s ease;
}

/* ==========================================================================
   ACTIONS (Buttons/Links)
   ========================================================================== */

.plexa-chat-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.plexa-chat-action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border: 1px solid var(--plexa-chat-border-light);
    border-radius: 20px;
    background: var(--plexa-chat-bg-tertiary);
    color: var(--plexa-chat-text);
    font-size: 14px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
}

.plexa-chat-action:hover {
    background: var(--plexa-chat-border);
    border-color: #555;
    color: var(--plexa-chat-text);
}

.plexa-chat-action--primary {
    background: var(--plexa-chat-primary);
    border-color: var(--plexa-chat-primary);
}

.plexa-chat-action--primary:hover {
    background: var(--plexa-chat-primary-hover);
    border-color: var(--plexa-chat-primary-hover);
}

.plexa-chat-action--secondary {
    background: transparent;
    border-color: var(--plexa-chat-primary);
    color: var(--plexa-chat-primary);
}

.plexa-chat-action--secondary:hover {
    background: rgba(74, 144, 217, 0.1);
    color: #6bb3f0;
    border-color: #6bb3f0;
}

.plexa-chat-action--danger {
    background: transparent;
    border-color: var(--plexa-chat-error);
    color: var(--plexa-chat-error);
}

.plexa-chat-action--danger:hover {
    background: var(--plexa-chat-error-bg);
}

.plexa-chat-action:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.plexa-chat-action-btn {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    background: #28a745;
    color: #fff;
    border: none;
    border-radius: 0;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.plexa-chat-action-btn:hover {
    background: #218838;
    color: #fff;
}

/* ==========================================================================
   FORM (Input Response)
   ========================================================================== */

.plexa-chat-form {
    background: var(--plexa-chat-bg-secondary);
    border: 1px solid var(--plexa-chat-border);
    border-radius: var(--plexa-chat-radius);
    padding: 16px;
    margin-top: 12px;
}

.plexa-chat-form__fields {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.plexa-chat-form__actions {
    margin-top: 20px;
    display: flex;
    gap: 8px;
}

.plexa-chat-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.plexa-chat-field__label {
    font-weight: 500;
    font-size: 13px;
    color: var(--plexa-chat-text-secondary);
}

.plexa-chat-field__label .required {
    color: var(--plexa-chat-error);
}

.plexa-chat-field__input {
    padding: 10px 12px;
    border: 1px solid var(--plexa-chat-border-light);
    border-radius: 6px;
    font-size: 14px;
    background: var(--plexa-chat-bg-tertiary);
    color: var(--plexa-chat-text);
    transition: border-color 0.2s;
}

.plexa-chat-field__input:focus {
    outline: none;
    border-color: var(--plexa-chat-primary);
}

.plexa-chat-field__input::placeholder {
    color: var(--plexa-chat-text-muted);
}

textarea.plexa-chat-field__input {
    min-height: 80px;
    resize: vertical;
}

select.plexa-chat-field__input {
    cursor: pointer;
}

/* ==========================================================================
   APPROVAL TABLE
   ========================================================================== */

.plexa-chat-approval {
    background: var(--plexa-chat-bg-secondary);
    border: 1px solid var(--plexa-chat-border);
    border-radius: var(--plexa-chat-radius);
    overflow: hidden;
    margin-top: 12px;
}

.plexa-chat-approval__table {
    width: 100%;
    border-collapse: collapse;
}

.plexa-chat-approval__table th,
.plexa-chat-approval__table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--plexa-chat-border);
}

.plexa-chat-approval__table th {
    background: var(--plexa-chat-bg-tertiary);
    font-weight: 500;
    font-size: 13px;
    color: var(--plexa-chat-text-secondary);
}

.plexa-chat-approval__table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.plexa-chat-approval__table tbody tr:last-child td {
    border-bottom: none;
}

.plexa-chat-approval__checkbox {
    width: 40px;
    text-align: center;
}

.plexa-chat-approval__input {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--plexa-chat-border-light);
    border-radius: 4px;
    background: var(--plexa-chat-bg);
    color: var(--plexa-chat-text);
    font-size: 13px;
}

.plexa-chat-approval__input:focus {
    outline: none;
    border-color: var(--plexa-chat-primary);
}

.plexa-chat-approval__actions {
    display: flex;
    gap: 8px;
    padding: 12px;
    background: var(--plexa-chat-bg-tertiary);
    border-top: 1px solid var(--plexa-chat-border);
}

/* ==========================================================================
   PROGRESS
   ========================================================================== */

.plexa-chat-progress {
    background: var(--plexa-chat-bg-secondary);
    border: 1px solid var(--plexa-chat-border);
    border-radius: var(--plexa-chat-radius);
    padding: 16px;
    margin-top: 12px;
}

.plexa-chat-progress__bar {
    height: 8px;
    background: var(--plexa-chat-bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.plexa-chat-progress__fill {
    height: 100%;
    background: var(--plexa-chat-primary);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.plexa-chat-progress__info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 8px;
    font-size: 13px;
}

.plexa-chat-progress__percent {
    font-weight: 600;
    color: var(--plexa-chat-text);
}

.plexa-chat-progress__message {
    color: var(--plexa-chat-text-muted);
}

.plexa-chat-progress__cancel {
    margin-top: 12px;
    padding: 6px 12px;
    border: 1px solid var(--plexa-chat-error);
    border-radius: 4px;
    background: transparent;
    color: var(--plexa-chat-error);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.plexa-chat-progress__cancel:hover {
    background: var(--plexa-chat-error-bg);
}

.plexa-chat-progress[data-status="complete"] .plexa-chat-progress__fill {
    background: var(--plexa-chat-success);
}

.plexa-chat-progress[data-status="failed"] .plexa-chat-progress__fill {
    background: var(--plexa-chat-error);
}

/* ==========================================================================
   DESKTOP LAYOUT
   ========================================================================== */

.plexa-chat-desktop {
    display: flex;
    height: 600px;
    background: var(--plexa-chat-bg);
    border-radius: var(--plexa-chat-radius);
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 14px;
}

.plexa-chat--frontend .plexa-chat-desktop {
    border: 1px solid var(--plexa-chat-border);
}

/* Chat panel (left) */
.plexa-chat-desktop__chat {
    flex: 1 1 50%;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--plexa-chat-border);
}

.plexa-chat-desktop__chat .plexa-chat-messages {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.plexa-chat-desktop__chat .plexa-chat-input {
    flex: 0 0 auto;
    display: flex;
    gap: 8px;
    padding: 12px;
    border-top: 1px solid var(--plexa-chat-border);
    background: var(--plexa-chat-bg-secondary);
}

/* Work area (right) */
.plexa-chat-desktop__work {
    flex: 1 1 50%;
    display: flex;
    flex-direction: column;
}

.plexa-chat-desktop__tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--plexa-chat-border);
    background: var(--plexa-chat-bg-secondary);
}

.plexa-chat-desktop__tab {
    flex: 1 1 auto;
    padding: 12px 16px;
    border: none;
    background: transparent;
    color: var(--plexa-chat-text-muted);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border-bottom: 2px solid transparent;
}

.plexa-chat-desktop__tab:hover {
    color: var(--plexa-chat-text-secondary);
}

.plexa-chat-desktop__tab.active {
    color: var(--plexa-chat-text);
    border-bottom-color: var(--plexa-chat-primary);
}

.plexa-chat-desktop__content {
    flex: 1 1 auto;
    position: relative;
    overflow: hidden;
}

.plexa-chat-desktop__panel {
    position: absolute;
    inset: 0;
    padding: 16px;
    overflow-y: auto;
    display: none;
}

.plexa-chat-desktop__panel.active {
    display: block;
}

/* ==========================================================================
   ADMIN CONTEXT
   ========================================================================== */

.plexa-chat--admin .plexa-chat-container {
    position: fixed;
    top: 32px;
    left: 160px;
    right: 0;
    bottom: 0;
    height: auto;
    border-radius: 0;
}

.plexa-chat--admin .plexa-chat-desktop {
    position: fixed;
    top: 32px;
    left: 160px;
    right: 0;
    bottom: 0;
    height: auto;
    border-radius: 0;
}

/* Collapsed admin menu */
.folded .plexa-chat--admin .plexa-chat-container,
.folded .plexa-chat--admin .plexa-chat-desktop {
    left: 36px;
}

/* Mobile admin */
@media (max-width: 782px) {
    .plexa-chat--admin .plexa-chat-container,
    .plexa-chat--admin .plexa-chat-desktop {
        top: 46px;
        left: 0;
    }
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 768px) {
    .plexa-chat-desktop {
        flex-direction: column;
        height: auto;
        min-height: 600px;
    }

    .plexa-chat-desktop__chat {
        flex: 0 0 400px;
        border-right: none;
        border-bottom: 1px solid var(--plexa-chat-border);
    }

    .plexa-chat-desktop__work {
        flex: 1 1 auto;
        min-height: 300px;
    }

    .plexa-chat-message {
        max-width: 95%;
    }
}

/* ==========================================================================
   FLOATING CHAT BUTTON
   ========================================================================== */

.plexa-chat-floating {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 100000;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Admin bar offset (logged-in frontend) */
body.admin-bar .plexa-chat-floating {
    bottom: 56px;
}

/* Trigger Button */
.plexa-chat-floating__trigger {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: var(--plexa-chat-primary);
    color: #fff;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, background-color 0.2s;
}

.plexa-chat-floating__trigger:hover {
    background: var(--plexa-chat-primary-hover);
    transform: scale(1.05);
}

.plexa-chat-floating__trigger .dashicons {
    font-size: 28px;
    width: 28px;
    height: 28px;
}

/* Icon states */
.plexa-chat-floating__icon-close {
    display: none;
}

.plexa-chat-floating--open .plexa-chat-floating__icon-open {
    display: none;
}

.plexa-chat-floating--open .plexa-chat-floating__icon-close {
    display: block;
}

/* Panel */
.plexa-chat-floating__panel {
    position: absolute;
    bottom: 70px;
    right: 0;
    width: 570px;
    height: 500px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: transform 0.3s ease, opacity 0.2s, visibility 0.2s;
}

.plexa-chat-floating--open .plexa-chat-floating__panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.plexa-chat-floating__panel .plexa-chat-container {
    height: 100%;
    border-radius: var(--plexa-chat-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* Floating Chat Mobile */
@media (max-width: 480px) {
    .plexa-chat-floating {
        bottom: 16px;
        right: 16px;
    }

    body.admin-bar .plexa-chat-floating {
        bottom: 48px;
    }

    .plexa-chat-floating__panel {
        position: fixed;
        bottom: 80px;
        right: 16px;
        left: 16px;
        width: auto;
        height: calc(100vh - 120px);
    }

    body.admin-bar .plexa-chat-floating__panel {
        bottom: 112px;
        height: calc(100vh - 152px);
    }
}